History of The Flag of Iran
The current flag of Iran was adopted on July 29, 1980, following the Iranian Revolution of 1979, which led to the establishment of the Islamic Republic. Prior to this, Iran used a tricolor with a lion and sun emblem in the center, symbolizing the monarchy that had ruled Iran for centuries. The lion and sun emblem was removed after the revolution, and the current design, symbolizing the new Islamic regime, was chosen. The emblem in the center is said to represent the five pillars of Islam, and it is shaped like a tulip, a symbol of martyrdom in Iran. The takbir, which translates to 'God is great', was added to the flag to underline the Islamic character of the nation.